我有一个看起来像这样的二维数组:
[true,false,false]
[false,true,false]
[false,false,true]
我希望我可以用'true'(字符串)替换所有 true(bool)值,并用替换所有 false > '假'
答案 0 :(得分:6)
是的,请使用Array#map
执行以下操作:
a = [[true,false,false], [false,true,false], [false,false,true]]
# you can also assign this to a new local variable instead of a,
# if you need to use your source array object in future anywhere.
a = a.map { |e| e.map(&:to_s) }
答案 1 :(得分:3)
假设你有一个数组数组:
a = [[true,false,false], [false,true,false], [false,false,true]]
a.each { |x| x.map!(&:to_s) }
a # => [["true", "false", "false"], ["false", "true", "false"], ["false", "false", "true"]]